Monitor



FIG. 1 is a front isometric view of a monitor in accordance with the new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a top isometric view thereof;

FIG. 4 is a bottom isometric view thereof;

FIG. 5 is a right side isometric view thereof; and,

FIG. 6 is a left side isometric view thereof. 

CLAIM The ornamental design for a monitor, as shown and described. 